/*
 * Copyright 2012-2020 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package tjs.styudy.mini.springboot.devtools.config;

import java.lang.reflect.Method;

/**
 * Thread used to launch a restarted application.
 *
 * @author Phillip Webb
 */
public class RestartLauncher extends Thread {

    private final String mainClassName;

    private final String[] args;

    private Throwable error;

    public RestartLauncher(ClassLoader classLoader, Thread.UncaughtExceptionHandler exceptionHandler, String mainClassName, String[] args) {
        this.mainClassName = mainClassName;
        this.args = args;
        setUncaughtExceptionHandler(exceptionHandler);
        setName("restartedMain");
        setDaemon(false);
        setContextClassLoader(classLoader);
    }

    @Override
    public void run() {
        try {
            Class<?> mainClass = Class.forName(this.mainClassName, false, getContextClassLoader());
            Method mainMethod = mainClass.getDeclaredMethod("main", String[].class);
            mainMethod.invoke(null, new Object[]{this.args});//直接传args，标识多个参数；而实际上只有一个，所以要转成Object
        } catch (Throwable ex) {
            this.error = ex;
            getUncaughtExceptionHandler().uncaughtException(this, ex);
        }
    }

}
